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IoT Gateway and Wireless Nodes (2)

Part 2: the software

IoT Gateway and Wireless Nodes (2)
The author has looked in vain for a suitable commercial home automation system. Since he couldn't find anything to his liking, he decided to develop his own system. Various ‘end nodes’ (sensors and actuators) communicate via an 868 MHz radio link with a central gateway. The gateway uses MQTT to send the measurement values to an OpenHAB server, which processes them into a form suitable for display.
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